Finding the Fourth Proportional to 2,312.42, 3,191.15 and 1,264.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,312.42 : 3,191.15 = 1,264.48 : x
2. Step 2: Convert to fraction form
   2,312.42/3,191.15 = 1,264.48/x
3. Step 3: Cross multiply
   2,312.42x = 3,191.15 × 1,264.48
4. Step 4: Simplify right side
   2,312.42x = 4,035,131.05
5. Step 5: Solve for x
   x = 4,035,131.05/2,312.42
6. Step 6: Final answer
   x = 1,744.99